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公开(公告)号：US20210407414A1
公开(公告)日：2021-12-30
申请号：US17155925
申请日：2021-01-22
发明人： Keunwoo KIM , Taewook KANG
IPC分类号： G09G3/3241 , G09G3/3291 , G09G3/3266
摘要： A pixel includes a light-emitting element, a driving transistor that controls an amount of a driving current flowing to the light-emitting element according to a gate-source voltage, first and second compensation transistors that operate in response to a first scan signal and are electrically connected in series with each other between a gate and a drain of the driving transistor, first and second gate initialization transistors that operate in response to a second scan signal and are electrically connected in series with each other between a voltage line and the gate of the driving transistor, and a node connection transistor that connects a first floating node and a second floating node to each other in response to the second scan signal. The first floating node is between the first and second compensation transistors, and the second floating node is between the first and second gate initialization transistors.
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公开(公告)号：US20210335248A1
公开(公告)日：2021-10-28
申请号：US16489079
申请日：2019-02-12
发明人： Hongqing FENG
IPC分类号： G09G3/3241 , G09G3/3258
摘要： The present disclosure provides a pixel circuit and a method for driving the same, a display panel and a display device. The pixel circuit includes: a reset compensation circuit, a data writing circuit, a light emitting control circuit, a driving transistor and a light emitting element, the reset compensation circuit is coupled to a gate, a first electrode and a second electrode of the driving transistor and a reset control signal line, and is configured to reset the gate of the driving transistor during a reset compensation stage and acquire a threshold voltage of the driving transistor under the control of a reset control signal provided by the reset control signal line.
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公开(公告)号：US11133368B2
公开(公告)日：2021-09-28
申请号：US16159583
申请日：2018-10-12
IPC分类号： H01L27/12 , G02F1/1345 , G09G3/3258 , G02F1/1335 , G02F1/1362 , H01L27/32 , G09G3/3233 , G09G3/3241
摘要： Organic EL display module including a pixel disposed in respective intersections between a plurality of scanning lines and a plurality of data lines, which lines are aligned in a matrix, and a current supply line that supplies electric current to the pixel, wherein the pixel includes an active device selected by the scanning line, a data storage device that stores a data signal that is supplied from the data line by control of the active device, and an organic light emitting device that emits light by the electric current supplied by the current supply line according to the data signal stored in the data storage device, wherein the data storage device provides a lower electrode, an insulating layer and an upper electrode, and wherein the lower electrode has a same layer with a channel layer of the active device and the upper electrode is made of a metal material.
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公开(公告)号：US11127353B2
公开(公告)日：2021-09-21
申请号：US16690815
申请日：2019-11-21
申请人： LG Display Co., Ltd.
发明人： Dohyung Lee , ChanYong Jeong , JuHeyuck Baeck , Kwangll Chun
IPC分类号： G09G3/3241 , G09G3/3266 , H01L27/12
摘要： A display device and a signal inversion device are provided. A display device includes: a display panel including: sub-pixels, and scan lines respectively connected to each of the sub-pixels, and light emission control lines respectively connected to each of the sub-pixels, a scan driver circuit for outputting respective scan signals to the scan lines, and a light emission control driver circuit for outputting respective light emission control signals to the light emission control lines, the light emission control driver circuit including: a resistance device electrically connected between: a first voltage node for receiving a first voltage, and an output node electrically connected to the light emission control lines, and a transistor electrically connected between the output node and a second voltage node for receiving a second voltage that is different from the first voltage, wherein an on/off operation of the transistor is controlled according to an input signal.
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公开(公告)号：US20210012716A1
公开(公告)日：2021-01-14
申请号：US17033033
申请日：2020-09-25
申请人： LG Display Co., Ltd.
发明人： JinYeong KIM , HyeonHo SON , HanSaem KANG
IPC分类号： G09G3/3241 , H01L27/15 , H01L33/06 , H01L33/32 , H01L33/60 , H01L33/42 , G09G3/3233
摘要： Discussed is a light emitting diode display device including a plurality of pixels displaying an image based on a data signal, the plurality of pixels each including: a first and second light emitting diode devices emitting light, a first and second driving transistors electrically connected to the first and second light emitting diode devices respectively, an insulation layer covering the first and second driving transistors and a planarization layer on the insulation layer and an adhesive member between the insulation layer and the first and the second light emitting diode devices, wherein each of the first and second light emitting diode devices includes: a first portion including a first electrode and a second electrode and a second portion opposite to the first portion, and wherein the adhesive member is interposed between the second portion of each of the first and the second light emitting diode devices and the insulation layer.
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公开(公告)号：US10733939B2
公开(公告)日：2020-08-04
申请号：US15890361
申请日：2018-02-07
发明人： Kerui Xi , Junting Ouyang , Baiquan Lin , Tingting Cui
IPC分类号： G09G3/3291 , G09G3/3258 , G09G3/3241 , G09G3/3233
摘要： Disclosed are a pixel circuit, a display panel and a drive method for a pixel circuit. The pixel circuit comprises: a light-emitting element, configured for emitting light in response to a drive current; a drive transistor, configured for providing the drive current to the light-emitting element; a data write device, configured for writing a data signal to a gate electrode of the drive transistor; a hold device, electrically connected with the gate electrode of the drive transistor and configured for holding a voltage on the gate electrode of the drive transistor in a light-emitting stage; and a control device, electrically connected with the gate electrode of the drive transistor and configured for controlling the drive transistor to operate in a full cut-off region in a cut-off stage, wherein, the cut-off stage precedes the light-emitting stage.
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公开(公告)号：US20200243632A1
公开(公告)日：2020-07-30
申请号：US16843489
申请日：2020-04-08
发明人： JUN HEE LEE , IN JUN BAE , KOHEI EBISUNO
IPC分类号： H01L27/32 , G09G3/3233 , H01L29/786 , H01L29/04 , G09G3/3291 , G09G3/3266 , G09G3/3258 , G09G3/3241
摘要： A display device includes a scan line that extends in a first direction on a substrate and that transmits a scan signal; a data line that extends in a second direction that intersects the first direction and that transmits a data signal; a driving voltage line that extends in the second direction and that transmits a driving voltage; a transistor that includes a second transistor connected to the scan line and the data line and a first transistor connected to the second transistor; a light emitting device connected to the transistor; and a conductive pattern disposed between the substrate and the first transistor, where each of the first and second transistors includes an active pattern with a stacked first semiconductor layer and a second semiconductor layer, which have different crystalline states.
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公开(公告)号：US10720098B2
公开(公告)日：2020-07-21
申请号：US15814341
申请日：2017-11-15
IPC分类号： G09G3/20 , G09G3/32 , G09G3/3233 , G09G3/36 , G09G3/3208 , G09G3/3241
摘要： Embodiments relate to a micro light-emitting-diode (mLED) cell that includes a mLED and a controller. The controller receives a brightness data signal and generates a driving signal corresponding to the brightness data signal. The controller is coupled to the mLED for providing the driving signal that turns on the mLED for first times and turns off the mLED for second times for a duration of a cycle. The driving signal causes a current density in mLED to be above a threshold value when the mLED is turned on.
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公开(公告)号：US10657902B2
公开(公告)日：2020-05-19
申请号：US15674925
申请日：2017-08-11
发明人： Jae Kwan Lee , Dong Hyun Hwang , Hyun Ho Kim
IPC分类号： G09G3/3241 , G09G3/3291 , G09G3/20 , G09G3/3258
摘要： Disclosed is a sensing circuit of a display device for external compensation of an OLED. The sensing circuit includes a current receiving unit configured to receive a pixel current containing a leakage current, convert the pixel current at a preset current ratio, and output the converted pixel current; a current source unit; a current sinking unit; a current detection unit; and a detection signal output unit configured to sample an offset voltage corresponding to the leakage current using the detected current.
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公开(公告)号：US10522084B2
公开(公告)日：2019-12-31
申请号：US15711585
申请日：2017-09-21
申请人： Apple Inc.
发明人： Sheng Zhang , Chaohao Wang , Paolo Sacchetto , Paul S. Drzaic , Wei Chen , Wei H. Yao
IPC分类号： G09G3/3241 , G09G3/3233 , G09G3/20
摘要： A display device may include a display having a plurality of pixels. The display device may also include a replica pixel circuit having a switching device configured to output a first current based on a received voltage, a light-emitting diode (LED) configured to illuminate to a first gray level based on the first current output by the switching device, and current mirror circuitry configured to generate a second current that mirrors the first current. In addition, the replica pixel circuit may include a current source configured to output a reference current based on a voltage value that corresponds to the received voltage, comparator circuitry configured to determine a difference between the second current and the reference current, and voltage adjustment circuitry configured to adjust a source voltage output provided to the plurality of pixels based on the difference.
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